a)Is Tom playing now? Tom isn't (is not) playing now.
b)Am i eating now? I'm (i am) not eating now.
c)Is the cat sleeping now? The cat isn't sleeping now.
d)Is Terry studying now? Terry isn't studying now.
e)Is the pet drinking now? The pet isn't drinking now.
f)Are you reading? You are not reading.
g)Is she playing? She is not playing.
h)Is he running? He is not running.
i)Are we studying? We aren't (are not) studying.
j)Are you singing? You are not singing.
k)Are they sleeping? They are not sleeping.